a)SO2 +Ca(OH)2---->CaSO3 +H2O
0,1---------0,1----------------0,1--0,1
b) n\(_{SO2}=\frac{2,24}{22,4}=0,1\left(mol\right)\)
n\(_{Ca\left(OH\right)2}=0,7.0,15=0,105\left(mol\right)\)
=> Ca(OH)2 dư
Thwo pthh
n\(_{NaOH}dư=0,105=0,1=0,05\left(mol\right)\)
m\(_{NaOH}dư=0,05.40=2\left(g\right)\)
m\(_{CaSO3}=0,1.120=12\left(g\right)\)
Chúc bạn học tốt
PTHH :2SO2+Ca(OH)2\(\rightarrow\)Ca(HSO)3
b,nSO2 = 0,1 mol
=> n Ca(OH)2 = 0,1(mol)
=> n NaOH = 0,05 (mol)
mNaOH = 0,05.40 = 2(g)
=> mCaSO3 = 12(g)
SO2 + Ca(OH)2 ---> CaSO3 + H2O
0,1 0,1 0,1
nSO2 = 0,1 mol
nCa(OH)2 = 0,15.0,7 = 0,105 mol
Ta có: 0,1/1 < 0,105/1 => nCa(OH)2 dư
mCa(OH)2 dư = (0,105-0,1) . 74 = 3,7 g
mCaSO3 = 0,1.120 = 12 g